Alright, some times it takes 3-15 trys to get my truck started. The fuel shut-off selonoid is not engaging to give me fuel. I just bought a brand new one ($390.00 wholesale), and put it on. Still not working right. Does better now, but still is acting up some. I had to flip the lever manually a little while ago. Any Ideas???? Shuts-off fine.

 

did you replace the shut off relay located on the fire wall? they usually fail first and are only about $30 from the dealer.

 

NEVER REPLACE THE SOLENOID!!!
Likely nothing is wrong with it unless it is very visibly burned up on the outside.
The solenoid is probably the most needlessly replaced item on a 12 valve, expensive too. The solenoid is a very simple, sturdy device that will easily last the life of the truck. It either works or it doesn't, there is no such thing as one getting weak.
The problem is almost always a corroded blue wire from the driver's side battery or a bad relay on the firewall. The rubber boot that protects the solenoid can fall apart allowing gunk and rust to bind the solenoid, clean it up and replace the boot.
Relay and boot are availible for a good price here http://www.fostertruck.com/dodge/default.htm

 

You can also fix the boot for CHEAP with some rubber from a bicycle tube and tye wraps...